want to add water tank on the structure to check the behavior of the fluid

- September 9, 2021 at 5:08 am
  
  Suhailabbas
  Subscriber
  
  i am doing harmonic analysis of a structure having time varying load (voltage),and i did it, now i want to add water tank on this structure to check the behavior of the fluid , this water tank does not have any inlet outlet velocity , that mean inlet and outlet are closed, but have a free surface, please suggest which analysis i will do?
- September 9, 2021 at 1:53 pm
  
  Karthik Remella
  Administrator
  
  Hello You should be able to set up your problem as a Multiphase simulation in Ansys Fluent. You will need to use the System Coupling to transfer your loads from your Harmonic analysis to Ansys Fluent. I think you will apply these loads to the walls of your tank. This would be the pressure that would be applied to the Fluid, which will move the interface (which is estimated by, say, the VoF model).
  Please look into this link to find some tutorials on 'System Coupling'.
  Ansys Product Help
  Regarding setting up a VOF model, please see the following tutorial (#19 - using the VOF model) on our Ansys Help page.
  Fluent Tutorials (ansys.com)
  Files can be downloaded using the following link.
  Ansys Product Help
  Karthik
- September 10, 2021 at 3:06 am
  
  Suhailabbas
  Subscriber
  
  hi
  but after doing harmonic analysis, i am not able to couple it with the ansys fluent using system coupling, what should i do now ?
- September 15, 2021 at 8:39 am
  
  Suhailabbas
  Subscriber
  
  hi kremella
  how i can couple harmonic with fluent , can you please tell me ?
- September 15, 2021 at 4:25 pm
  
  Sheldon Imaoka
  Ansys Employee
  
  What behavior of the fluid are you interested in examining? Are you interested in looking at generated pressure (acoustic) waves from the structure? You mentioned no inlet/outlet, so if this is a water tank, what kind of behavior of the fluid are you hoping to investigate?
  If you are interested in acoustic waves in the water tank, you can perform a vibroacoustic analysis. In Mechanical, for example, this could be done with a "Harmonic Acoustic" system to define the fluid (acoustic) and structural portions.
  Regards Sheldon
- September 16, 2021 at 2:50 am
  
  Suhailabbas
  Subscriber
  
  ok sorry i did not mention in the above query
  there is a free liquid surface and i wanna to check the waves generated in the surface
- September 16, 2021 at 6:15 am
  
  Suhailabbas
  Subscriber
  
  i wanna see what will be the behavior of the free surface of water
- September 17, 2021 at 7:59 pm
  
  Sheldon Imaoka
  Ansys Employee
  
  In Mechanical, you can solve a vibroacoustic analysis (Harmonic Acoustic) and define a Free Surface object to accomplish what you are seeking.
  Regards Sheldon
- September 18, 2021 at 3:25 am
  
  Suhailabbas
  Subscriber
  
  thank you so much
- February 4, 2022 at 7:20 am
  
  rahul_123
  Subscriber
  
  did you solve that ? can you send your model. I need help.
  - March 29, 2023 at 11:59 am
    
    Wenfeng Pang
    Subscriber
    
    I have a silimar case